Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02752551 2011-09-16
PRINTED DOCUMENT INCLUDING BAR
CODE AUTHENTICATION SYSTEM
FIELD OF THE INVENTION
,
The present invention is directed to a printed document in which a bar code is
printed on the document and the bar code is entirely covered by a scratch-off
layer. When
the scratch-off layer is removed, the bar code may be scanned to thereby
authenticate the
printed document.
BACKGROUND OF THE INVENTION
State and local lotteries have become important fund raising events for the
sponsoring agency. The popularity of lotteries has soared in the 1980's and
continues to
grow.
Those agencies charged with the administration of lotteries are acutely aware
of the
need to maintain the integrity of the lottery system from the printing of
lottery tickets to the
validation of prize winning number. Accordingly, much effort has been made to
ensure
that all tickets are authentic. It is generally recognized that in order for a
lottery game to
be successful, from the point of view of both the purchaser and the sponsor,
the lottery
ticket must be secure against counterfeiting, forgery and/or alteration.
Scratch-off type lottery tickets are those having at least one area over
printed with
an opaque latex ink. When the latex ink dries it forms a protective coating
that can be
scratched off to reveal pre-printed game data indicating whether or not a
prize has been
won.
,
One method of authenticating a lottery ticket is to print a bar code on the
bottom
' side thereof. When a person claims a prize by rubbing the scratch-
off layer to reveal the
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winning of a prize, the retail store owner can authenticate the ticket by
reading the exposed
bar code on the bottom side of the ticket with a scanner or other suitable
device.
Bar codes currently used on lottery tickets suffer from two major
disadvantages.
First, the bar codes are generally one dimensional and are comprised of at
least 10 and
sometimes as many as 43 or more characters to be printed on the lottery
ticket. The
number of characters occupies a great deal of space on scratch-off lottery
tickets which are
typically only 4" long and 2" wide. It is because the typical bar code takes
up a large
amount of space on the lottery ticket, that the bar code has been printed only
on the bottom
side or non-game data side of the lottery ticket.
In the early 1990's there was developed a new type of bar coding system
incorporating a two-dimensional bar code. The first of these systems is known
as a stacked
bar code in which several lines of a bar code are stacked one on top of the
other. This type
of bar code can be read by a laser bar-code scanner, a camera or a scanner
such as those
used in validation terminals. There has also been developed a two-dimensional
matrix bar
code comprised of dots and spaces in a two-dimensional matrix. Two dimensional
bar
codes enable a greater number of symbols to be set forth in a smaller area.
It would be a significant advance in the art of protecting printed documents
including
lottery tickets from counterfeiting if a bar code system could be employed for
authenticating
the printed document. A significant advantage would be obtained if the entire
bar code
could be hidden from view until such time as authentication is necessary. Such
a system
would make it more difficult to counterfeit the printed document and when the
printed
document was a lottery ticket provide a more secure lottery system.
It would also be a significant advantage to the overall appearance of the
lottery ticket
if the area occupied by the bar code authentication system could be reduced so
that more
of the substrate area of the printed document could be used for other
purposes, such as
artwork in conjunction with lottery tickets.
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SUMMARY OF THE INVENTION
The present invention is directed to the authentication of printed documents
and
especially lottery tickets. The printed document is provided with a bar code
covered by a
scratch-off layer which is placed over the entire bar code. The bar code is
therefore hidden
=
from view until the scratch-off layer is removed. In one embodiment of the
invention, the
bar code is covered by a scratch-off layer which is removed only by authorized
personnel.
Therefore, in accordance with one aspect of the invention, tampering with the
scratch-off
layer itself at least raises a question as to whether the printed document is
authentic.
In another embodiment of the invention, the bar code is imprinted in the same
area
occupied by the game data which together are covered by a scratch-off layer.
In this
embodiment the purchaser of the lottery ticket is permitted to remove the
scratch-off layer.
Authentication of the ticket is then made by scanning the exposed bar code.
In accordance with another aspect of the invention, the area occupied by the
bar
code can be minimized so that the location of the bar code is not restricted.
Thus, the bar
code and accompanying scratch-off layer can be either on the back of the
ticket or on the
front of the ticket. In the past, bar codes were limited to the back of the
ticket because
they occupied a relatively large area, thereby severely hampering the
imprinting of game
data, art work and other information on the front of the ticket.
In particular, the present invention is directed to a printed document such as
a
lottery ticket comprising:
(a) a substrate;
(b) bar code authentication means imprinted on the substrate; and
(c) a scratch-off layer placed over the entire bar code authentication
means and
.=
adapted to be removed to reveal the bar code authentication means so that
the printed document can be authenticated.
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=
The present invention also concerns a method for authenticating a printed
document in which the scratch-off layer is removed to reveal the entire bar
code
authentication means. The bar code authentication means can be read and
compared with
a predetermined list of bar code identification means in the form of numbers
and/or
symbols such that if the bar code identification means appears on the
predetermined list,
the printed document is authentic. If the bar code is spaced apart from the
game data and
covered with a separate scratch-off layer, then removal of the scratch-off
layer itself
constitutes a mode of authentication of the lottery ticket.
In a broad aspect, moreover, the present invention relates to a scratch-off
lottery
ticket comprising: (a) a substrate; (b) a play area on the substrate
comprising printed
indicia, said printed indicia when present in a desired format may result in a
prize being
won; (c) a non-play area on the substrate spaced apart from the printed
indicia of the play
area and including an authentication means comprising a two dimensional (2D)
bar code, said
2D bar code containing all information necessary to authenticate the lottery
ticket, said 2D
bar code being readable by a reading device by an agent of the lottery ticket,
such that when
the 2D bar code is read by the reading device, the lottery ticket may be
authenticated without
the input of additional information provided by the agent of the lottery
ticket or directly from
the printed document; (d) a removable continuous scratch-off coating covering
both the
printed indicia in said play area and the bar code in said non-play area,
wherein the absence
or alteration of the scratch-off coating covering the bar code may be a
determining factor as
to whether the lottery ticket is authentic.
BRIEF DESCRIPTION OF THE DRAWINGS
The following drawings in which like reference characters indicated like parts
are
illustrative of embodiments of the invention and are not intended to limit the
invention as
encompassed by the claims forming part of the application.
Figure 1 is a perspective view of the bottom side of a printed document in the
form of a lottery ticket employing a bar code in accordance with the prior
art;
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Figure 2 is a perspective view of one embodiment of a lottery ticket with a
bar
code covered by a scratch-off layer in accordance with the present invention;
Figure 3 is a perspective view of another embodiment of the invention in the
form
of a lottery ticket with a scratch-off layer covering a bar code which is
separated from
another scratch-off layer covering game data; and
Figure 4 is a perspective view of a further embodiment of the invention in the
form of a lottery ticket with a bar code and game data covered by a single
scratch-off
layer.
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DETAILED DESCRIPTION OF THE INVENTION
The present invention is generally directed to printed documents which have a
bar
-
code authentication means completely covered by a scratch-off layer. Because
the bar code
is not exposed to the public, counterfeiting and tampering with the bar code
is prevented
,
or at least inhibited.
Bar codes have been previously used to authenticate lottery tickets. Referring
to
Figure 1 there is shown a prior art lottery ticket 2 shown with its bottom
side 4 facing
upwards. The surface 4 contains instructional material generally designated by
the numeral
6 for the ticket and a bar code display 8 containing a plurality of symbols
such as bars 10
and spaces 12 capable of identifying an authentic ticket. As shown in the
prior art ticket
of Figure 1, the bar code is always exposed, from the time it is sold to the
time it is
presented to a lottery sponsor for authentication. Because the lottery ticket
is exposed, a
counterfeiter may alter the bar code or attach a new bar code for the purposes
of collecting
a prize on a counterfeit lottery ticket.
In accordance with the present invention, a bar code is used for
authentication
purposes but, unlike prior art devices, the entire bar code is covered with a
scratch-off
layer. The bar code may be covered by a separate scratch-off layer or by the
same scratch-
off layer used to cover the game data. Only when the scratch-off layer is
removed is the
bar code revealed. In the case of separate scratch-off layers, the lottery
sponsor may
scrutinize any ticket that is presented for collection if the scratch-off
layer has been altered
or removed. If a single scratch-off layer is used, any attempt to alter the
bar code will
likely result in an effect on the game data which will also likely be
scrutinized by a lottery
sponsor.
Referring specifically to Figure 2 there is shown a printed document 20 in the
form
of a lottery ticket in accordance with the present invention which has a bar
code 22
imprinted on a surface 24 of the printed document. It will be understood that
the surface
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24 of the printed document 20 may be the top side or the bottom side of the
printed
document.
,
The bar code 22 is covered in its entirety by a scratch-off layer 26.
Accordingly,
when the printed document (lottery ticket) is sold, the bar code can not be
seen by the
purchaser of the lottery ticket. It is only when the scratch-off layer is
removed by the
lottery sponsor that the bar code becomes visible and can be read by a optical
scanner or
the like. If the bar code is presented with the scratch-off layer removed, the
sponsor may
reject the ticket. Thus, it is the absence of removal or alteration of the
scratch-off layer
which itself assists in determining whether a lottery ticket is authentic.
The bar code and its overlaying scratch-off layer can be printed on the front
side of
the lottery ticket along with the game data which is covered by a separate
scratch-off layer.
Referring to Figure 3, there is shown a lottery ticket 30 having a top side 32
having
imprinted thereon game data represented by numeral 34 and a bar code 36. Each
of the
game data 34 and bar code 36 are covered by separate scratch-off layers 38 and
40,
respectively.
In this embodiment of the invention, the bar code remains hidden until the
scratch-
off layer is removed by a lottery sponsor to reveal the bar code. The bar code
is then read
by a scanner and if it is a member of a predetermined list, then the lottery
ticket is
authenticated. Counterfeiting by replacement of alteration of the bar code is
determined
because in order to engage in such activity the scratch-off layer would have
to be removed.
In another embodiment of the invention, a single scratch-off layer covers both
the
game data and the bar code. Referring to Figure 4 there is shown a printed
document 50
in the form of a lottery ticket having a top side 52 having imprinted thereon
game data 54
and a bar code 56, each covered by a single scratch-off layer 58.
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The game data bar code may be printed anywhere in the designated area covered
by
the scratch-off layer so long as each can be read by the human eye and an
optical scanner
or the like, respectively. Thus, the game data 54 can be imprinted around the
bar code as
-
shown specifically in Figure 4 or superimposed thereon. All that is required
is that the
purchaser of the ticket be able to read the game data to see if a prize has
been won. Of
,
course, the lottery sponsor must be able to read the bar code to authenticate
the lottery
ticket.
The type of bar codes that can be used in the present invention is unlimited.
Both
one dimensional bar codes and two dimensional bar codes can be used. Two
dimension bar
codes are preferred because they provide the greatest number of symbols in the
smallest
area. Examples of one dimensional bar codes include the Universal Product Code
(UPC),
Code 39, interleaved 2 of 5 Code, Code 93 and Code 128. Examples of two
dimensional
bar codes are the stacked bar code containing several lines of bar code
stacked one upon
the other. Examples include Code 16K, Code 49, MLC-D2 and Code PDF417.
Another two dimensional bar code comprises a matrix code comprised of dots and
spaces in a two dimensional matrix. Examples of two dimensional matrix codes
are Code
one, Vericode Code and Data Matrix Code.
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